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United States Patent | 6,115,518 |
Clapp | September 5, 2000 |
An optical waveguide Bragg grating spectrally selective reflector is made by ion beam implantation through a photolithographic mask to raise locally the effective refractive index of the guide. This contrasts with the standard method, which uses UV light to raise the index through the agency of the photo-refractive effect.
Inventors: | Clapp; Terry Victor (Standon, GB) |
Assignee: | Nortel Networks Corporation (Montreal, CA) |
Appl. No.: | 896092 |
Filed: | July 17, 1997 |
Aug 10, 1996[GB] | 9616839 |
Current U.S. Class: | 385/37 |
Intern'l Class: | G02B 006/34 |
Field of Search: | 385/10,14,37 359/288,566,569,570 333/147,153 |
4262996 | Apr., 1981 | Yao et al. | |
4419637 | Dec., 1983 | Volluet et al. | 333/147. |
4906063 | Mar., 1990 | Sato et al. | 385/37. |
4963177 | Oct., 1990 | Najafi et al. | 65/30. |
5080503 | Jan., 1992 | Najafi et al. | 385/1. |
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5459799 | Oct., 1995 | Weber | 385/2. |
5581639 | Dec., 1996 | Davies et al. | 385/10. |
5710849 | Jan., 1998 | Little et al. | 385/50. |
Foreign Patent Documents | |||
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